CN214412456U

CN214412456U - Surface sealing structure and driving motor

Info

Publication number: CN214412456U
Application number: CN202022990091.1U
Authority: CN
Inventors: 董鸿博; 杨学威
Original assignee: Aiways Automobile Shanghai Co Ltd
Current assignee: Aiways Automobile Shanghai Co Ltd
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2021-10-15
Anticipated expiration: 2030-12-11

Abstract

The utility model relates to a face seal structure and driving motor, face seal structure's sealing washer includes stereoplasm skeleton and elastic sealing layer, and the stereoplasm skeleton can provide better support to make the whole fixed shape, non-deformable that has of sealing washer. When the sealing ring is assembled, the shape of the sealing ring does not need to be adjusted for many times to match the joint surface, and the sealing ring can be pre-fixed before being compressed through the matching part and the positioning part on the joint surface, so that the sealing ring is convenient to install. The sealing structure is adopted by the driving motor to realize the sealing of the shell and the cover body, the sealing ring can keep the stability of the assembly position between the shell and the cover body, and the deviation is not easy to occur, so the sealing performance of the driving motor is better. In addition, the position of the sealing ring is not deviated, so that the sealing ring is not easy to damage in the pressing process. Therefore, after the sealing ring is removed in the repair process, the sealing ring can be reused when being assembled again, and unnecessary waste of materials is avoided.

Description

Surface sealing structure and driving motor

Technical Field

The utility model relates to an electric automobile technical field, in particular to face seal structure and driving motor.

Background

The most central component of an electric vehicle is a driving motor. In order to ensure the reliability of the electric vehicle, the sealing performance of each joint surface of the motor housing is also more required. At present, the most common sealing method is to install a seal ring or a seal strip on the sealing surface. During assembly, the sealing ring or the sealing strip needs to be manually positioned on the joint surface of the motor shell and then compressed. However, the sealing ring or the sealing strip is soft and not easy to shape, and the sealing ring or the sealing strip is difficult to assemble in place at one time and needs to be adjusted continuously, so that the installation is inconvenient.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a surface sealing structure that is easy to install.

The utility model provides a face seal structure for realize sealed between two composition planes, face seal structure includes the sealing washer and locates arbitrary location portion on the composition plane, the sealing washer includes annular stereoplasm skeleton and covers and locate the elastic sealing layer on the surface of stereoplasm skeleton, be formed with on the stereoplasm skeleton can with the cooperation portion that location portion card was held.

In one embodiment, the positioning portion is a positioning hole, and the matching portion is a convex column protruding in the axial direction of the sealing ring.

In one embodiment, the hard framework is a metal frame or a plastic frame, and the elastic sealing layer is a rubber layer or a silica gel layer.

In one embodiment, three matching parts are formed on the hard framework, and connecting lines of the three matching parts are triangular.

In one embodiment, the sealing ring is provided with an overflowing hole which penetrates through the hard framework and the elastic sealing layer along the axial direction.

Above-mentioned face seal structure, sealing washer include stereoplasm skeleton and elastic sealing layer, and the stereoplasm skeleton can provide better support to make the whole shape that has of sealing washer, non-deformable. Thus, the seal ring does not need to be shaped to match the mating surfaces multiple times during assembly. Furthermore, the fitting portion is fitted to the positioning portion on the joint surface, so that the seal ring can be pre-fixed before being pressed, thereby preventing the seal ring from being misaligned with respect to the joint surface. Therefore, the surface sealing structure is convenient to install.

A drive motor comprising:

the shell is of a hollow structure with two open ends;

the cover body is arranged at two ends of the shell in a covering manner; and

the surface sealing structure of any one of the above preferred embodiments, which is provided between the cover and the housing to achieve sealing between the end surface of the cover and the end surface of the housing.

In one embodiment, the end surfaces of the two opposite ends of the shell are provided with the positioning parts.

In one embodiment, the portable electronic device further comprises a fastening bolt, wherein the fastening bolt penetrates through the cover body and the shell and is in threaded connection with the shell and the cover bodies at two ends of the shell.

In one embodiment, the opposite ends of the shell are formed with positioning end faces, and the cover body is provided with a spigot matched with the positioning end faces.

In one embodiment, the housing and the cover bodies at two ends are matched to form a cooling flow channel, an overflowing hole penetrating through the hard framework and the elastic sealing layer along the axial direction is formed in the sealing ring, and the cooling flow channel penetrates through the overflowing hole.

The driving motor adopts the surface sealing structure to realize the sealing of the shell and the cover body, and the sealing ring can keep the stability of the assembly position between the shell and the cover body and is not easy to generate deviation. Therefore, the sealing performance of the driving motor is better. In addition, the position of the sealing ring is not deviated, so that the sealing ring is not easy to damage in the pressing process. Therefore, after the sealing ring is removed in the repair process, the sealing ring can be reused when being assembled again, and unnecessary waste of materials is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is an exploded view of a driving motor according to a preferred embodiment of the present invention;

FIG. 2 is a partial cross-sectional view of the drive motor shown in FIG. 1;

fig. 3 is a schematic structural view of a housing in the driving motor shown in fig. 1;

fig. 4 is a partial sectional view of a seal ring in the driving motor shown in fig. 1.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 and 2, a driving motor 100 according to a preferred embodiment of the present invention includes a housing 110, a cover 120, and a surface sealing structure 200.

The housing 110 is a hollow structure with both ends open. Specifically, the housing 110 is generally a metal cylindrical structure, and the interior of the housing 110 may be used to mount a stator, a rotor, and the like. The cover 120 covers two ends of the housing 110, so as to cooperate with the housing 110 to form the motor cavity 101. The motor chamber 101 is used to accommodate components such as coils, and therefore, it is necessary to maintain good sealing performance. The cover 120 has two parts, which may have the same structure and may be divided into a front cover and a rear cover. In addition, one of the covers 120 may also be a reducer case in the powertrain.

The face seal arrangement 200 is used to effect a seal between two engagement faces. Specifically, the face seal structure 200 is provided between the cover 120 and the housing 110 to achieve sealing between the end face of the cover 120 and the end face of the housing 110. That is, the two joint surfaces in the present embodiment refer to the end surface of the cover 120 and the end surface of the case 110, respectively. Since there are two covers 120, the sealing structure 200 should be at least two. The surface sealing structure 200 includes a sealing ring 130 and a positioning portion 111, and the positioning portion 111 is disposed on any one of the joint surfaces, such as an end surface of the cover 120 or an end surface of the housing 110.

Specifically, in the present embodiment, the end surfaces of the opposite ends of the housing 110 are provided with positioning portions 111. That is, the positioning portions 111 do not need to be additionally provided on the covers 120 at both ends. Therefore, the structure of the cover 120 may not need to be changed with respect to the cover in the conventional driving motor, and only the case 110 needs to be redesigned. Therefore, the cover 120 can be prevented from being opened again, and the cost is effectively reduced.

Referring to fig. 4, the sealing ring 130 includes a hard skeleton 131 and an elastic sealing layer 132. The hard skeleton 131 is annular. The shape of the hard frame 131 matches the shape of the opening of the housing 110, and is generally circular. The elastic sealing layer 132 covers the surface of the hard frame 131. The elastic sealing layer 132 may be fixed to the hard frame 131 by assembling, or may be directly injection-molded and bonded by injection molding.

The hard frame 131 is formed of a material having a high hardness, has a high mechanical strength and hardness, is not easily deformed, and can support the elastic sealing layer 132. The elastic sealing layer 132 is easily deformed by compression, and fills the gap between the joint surfaces to achieve sealing. Specifically, in this embodiment, the hard frame 131 is a metal frame or a plastic frame, and the elastic sealing layer 132 is a rubber layer or a silicone layer.

Further, the hard frame 131 is formed with a fitting portion 1311 capable of being held by the positioning portion 111. The engaging portion 1311 may be a groove, a hole, a protrusion, and the like, and the corresponding positioning portion 111 may be a protrusion, a groove, a hole, and the like. Specifically, in the present embodiment, the positioning portion 111 is a positioning hole, and the matching portion 1311 is a convex pillar protruding along the axial direction of the sealing ring 130. The convex column can be integrally formed with the hard framework 131, or can be separately formed and then clamped into the hard framework 131.

The hard skeleton 131 can provide better support for the elastic sealing layer 132. Therefore, the seal ring 130 has high strength as a whole, and can maintain a fixed shape and be hardly deformed. During assembly, the seal ring 130 need not be shaped multiple times to match the mating surfaces. Further, since the fitting portion 1311 is fitted to the positioning portion 111, the seal ring 130 can be preliminarily fixed before being pressed, so that the seal ring 130 is prevented from being misaligned with respect to the joint surface, and the seal structure 200 can be mounted more easily.

Specifically, in the present embodiment, three matching portions 1311 are formed on the hard frame 131, and the connecting lines of the three matching portions 1311 are triangular. The three fitting portions 1311 may be fitted with the three positioning portions 111 corresponding in position, thereby providing three pre-fixing forces to the seal ring 130. The triangular support structure is more stable, so that the stability of the sealing ring 130 is better when the sealing ring 130 is pre-fixed.

The drive motor 100 adopts the surface sealing structure 200 to seal the case 110 and the lid 120, and the seal ring 130 can maintain the stability of the assembly position between the case 110 and the lid 120, and is less likely to cause a deviation. Therefore, the sealing performance of the driving motor 100 is better. Furthermore, since there is no deviation in the position of the seal ring 130, it is not easily damaged during the pressing process. Therefore, after the sealing ring 130 is removed in the repairing process, the sealing ring can be reused when being assembled again, so that unnecessary waste of materials is avoided.

Referring to fig. 2 again, in the present embodiment, the driving motor 100 further includes a fastening bolt 140, and the fastening bolt 140 is disposed through the cover 120 and the casing 110 and is screwed with the casing 110 and the cover 120 at two ends of the casing 110.

The fastening bolts 140 may connect and fix the case 110 and the covers 120 at both ends of the case 110. Meanwhile, the pressing force applied to the seal ring 130 can also be adjusted by controlling the tightening degree of the fastening bolt 140. The fastening bolts 140 may be a plurality and distributed around the circumference of the housing 110 so as to apply pressing force to the sealing ring 130 from various angles.

Referring to fig. 3, in the present embodiment, two opposite ends of the housing 110 are formed with positioning end surfaces 112, and the cover 120 is provided with a seam 121 matching with the positioning end surfaces 112. The positioning end surface 112 is engaged with the spigot 121, so that the housing 110 and the cover 120 can be accurately positioned and engaged, and the axial compression of the sealing ring 130 is ensured, so that the sealing effect can be ensured.

The performance of the driving motor 100 is greatly affected by the heat dissipation performance of the driving motor, and therefore, most of the driving motors are cooled by water cooling. In the present embodiment, the housing 110 and the covers 120 at both ends cooperate to form the cooling channel 102.

Specifically, strip-shaped channels (not shown) may be formed in the side walls of the casing 110 and the cover 120, and the openings of the channels are located on the end surfaces of the casing 110 and the cover 120. When the cover 120 covers the opening of the housing 110, the channels on the housing 110 and the cover 120 are butted to form the cooling flow path 102. A cooling fluid, such as water, may be circulated through the cooling channels 102 to accelerate heat dissipation.

Further, in the present embodiment, the seal ring 130 is formed with the through-hole 103 axially penetrating the hard frame 131 and the elastic sealing layer 132, and the cooling flow passage 102 passes through the through-hole 103.

With the arrangement, only a single sealing ring 130 is needed to be arranged, so that the motor cavity 101 can be sealed, and the cooling flow channel 102 can also be sealed.

It should be noted that in other embodiments, if the seal ring 130 is not provided with the overflowing hole 103, two seal rings 130 having different inner diameters and arranged concentrically need to be provided. Furthermore, the cooling flow passage 102 needs to pass through the gap between the two seal rings 130.

The driving motor 100 is sealed between the housing 110 and the cover 120 by the surface sealing structure 200. The sealing ring 130 comprises a hard skeleton 131 and an elastic sealing layer 132, and the hard skeleton 131 can provide better support, so that the sealing ring 130 has a fixed shape and is not easy to deform. Thus, during assembly, the seal ring 130 need not be shaped multiple times to match the mating surfaces. Further, the fitting portion 1311 is fitted to the positioning portion 111 on the joint surface, so that the seal ring 130 can be pre-fixed before being pressed against the joint surface, thereby preventing the displacement of the seal ring 130 with respect to the joint surface. It can be seen that the face seal arrangement 200 described above is more convenient to install.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a face seal structure for realize sealed between two composition surfaces, its characterized in that, face seal structure includes the sealing washer and locates arbitrary location portion on the composition surface, the sealing washer includes annular stereoplasm skeleton and covers and locate the elastic sealing layer on the surface of stereoplasm skeleton, be formed with on the stereoplasm skeleton can with the cooperation portion that location portion card was held.

2. The face seal structure according to claim 1, wherein the positioning portion is a positioning hole, and the fitting portion is a boss protruding in an axial direction of the seal ring.

3. The face seal structure of claim 1, wherein the rigid skeleton is a metal frame or a plastic frame, and the elastic sealing layer is a rubber layer or a silicone layer.

4. The surface sealing structure according to claim 1, wherein three of the engaging portions are formed on the hard skeleton, and a line connecting the three engaging portions is triangular.

5. The face seal structure of claim 1, wherein an overflow hole is formed in the seal ring to axially penetrate the hard skeleton and the elastic seal layer.

6. A drive motor, comprising:

the shell is of a hollow structure with two open ends;

the cover body is arranged at two ends of the shell in a covering manner; and

the face seal structure of any one of claims 1 to 5, which is provided between the cover and the housing to effect a seal between an end face of the cover and an end face of the housing.

7. The drive motor according to claim 6, wherein end faces of opposite ends of the housing are each provided with the positioning portion.

8. The driving motor according to claim 6, further comprising a fastening bolt, wherein the fastening bolt is inserted into the cover and the housing and is screwed with the housing and the covers at both ends of the housing.

9. The drive motor according to claim 6, wherein the housing has positioning end surfaces formed at opposite ends thereof, and the cover has a spigot engaged with the positioning end surfaces.

10. The driving motor as claimed in claim 6, wherein the housing and the covers at both ends cooperate to form a cooling channel, an overflowing hole axially penetrating the hard skeleton and the elastic sealing layer is formed on the sealing ring, and the cooling channel passes through the overflowing hole.